Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Cost of sales:
Inventory impairments and land option cost write-offs			$ 32.6	$ 33.9
Gross profit:
Interest expense	10.1	19.6	41.0	69.3
Loss on early retirement of debt, net	6.5		10.7	6.7
Income (loss) before income taxes	28.9	46.3	(21.8)	101.2
Provision for (Benefit from) income taxes	0.2	(4.2)	(57.8)	(152.7)
Net income	28.7	50.5	36.0	253.9
Basic net income per common share	$ 0.09	$ 0.16	$ 0.11	$ 0.80
Net income per common share assuming dilution	$ 0.09	$ 0.16	$ 0.11	$ 0.78
Cash dividends declared per common share	$ 0.0375	$ 0.0375	$ 0.1125	$ 0.1125
Homebuilding [Member]
Revenues:
Home sales	974.5	1,378.2	2,468.6	3,381.1
Land/lot sales	0.9	0.1	6.9	2.9
Total revenues	975.4	1,378.3	2,475.5	3,384.0
Cost of sales:
Home sales	813.5	1,141.1	2,069.9	2,793.5
Land/lot sales	0.7	0.1	6.7	2.2
Inventory impairments and land option cost write-offs	9.9	30.3	32.6	33.9
Total cost of sales	824.1	1,171.5	2,109.2	2,829.6
Gross profit:
Home sales	161.0	237.1	398.7	587.6
Land/lot sales	0.2		0.2	0.7
Inventory impairments and land option cost write-offs	(9.9)	(30.3)	(32.6)	(33.9)
Gross profit	151.3	206.8	366.3	554.4
Selling, general and administrative expense	113.7	143.5	355.8	401.2
Interest expense	10.1	19.6	41.0	69.3
Loss on early retirement of debt, net	6.5	8.3	10.7	6.7
Other (income)	(1.2)	(2.0)	(6.8)	(7.4)
Income (loss) before income taxes	22.2	37.4	(34.4)	84.6
Financial Services [Member]
Gross profit:
Revenues, net of recourse and reinsurance expense	23.8	27.8	63.0	67.7
General and administrative expense	19.3	21.2	56.4	57.2
Interest expense	0.3	0.7	0.7	1.4
Interest and other (income)	(2.5)	(3.0)	(6.7)	(7.5)
Income (loss) before income taxes	$ 6.7	$ 8.9	$ 12.6	$ 16.6